Broken Charger Blues

[MadMonkTX]

Hey ya'll! Long-time lurker, first time poster. Just started vaping a couple of months ago and I love it (analogs 20+ years). After trying out a few disposables and minis, I picked up a Riva kit at litecig for a great price. Everything has been working great, except that after a week the charger stopped working. Opened it up and found that I had overtightened the batteries and so had twisted the wires right off of the charging head. I think that I can resolder it back into working shape (at least enough til I can order another charger). I'm pretty sure that the positive wire coming off the board should go to the center post, black to the outer ring, but I want to make absolutely certain. It's going to be a week til I can get a new charger, so any help would be greatly appreciated!!!